﻿////////////////////////////////////////////////////////////////////////////////////////
//  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING THIS SOFTWARE
//
//  By downloading, copying, installing or using the software you agree to this license.
//  If you do not agree to this license, do not download, install, copy or use the software.
//
// Copyright (C) 2013, AerVision Technologies Pty Ltd, all rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
//   * Redistribution's of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//
//   * Redistribution's in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//
//   * The name of AerVision Technologies, may not be used to endorse or promote products
//     derived from this software without specific prior written permission.
//
// This software is provided by the copyright holders and contributors to demonstrate 
// www.AerCloud.net Framework as a Service API (FaaS), "as is" and
// any express or implied warranties, including, but not limited to, the implied
// warranties of merchantability and fitness for a particular purpose are disclaimed.
// In no event shall the copyright holder or contributors be liable for any direct,
// indirect, incidental, special, exemplary, or consequential damages
// (including, but not limited to, procurement of substitute goods or services;
// loss of use, data, or profits; or business interruption) however caused
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
// the use of this software, even if advised of the possibility of such damage.
////////////////////////////////////////////////////////////////////////////////////////

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace App_AerCloudDemo.Utils
{
    internal class NameCache
    {
        private static Dictionary<string, List<string>> localCache = new Dictionary<string, List<string>>();

        public static void AddImageName(string personName, string imageName)
        {
            if (!localCache.ContainsKey(personName))
                localCache[personName] = new List<string>();

            if (!localCache[personName].Contains(imageName))
                localCache[personName].Add(imageName);
        }

        public static void AddImageNames(string personName, IEnumerable<string> imageNames)
        {
            foreach (var s in imageNames)
                AddImageName(personName, s);
        }

        public static bool Exists(string personName, string imageName)
        {
            if (!localCache.ContainsKey(personName))
                return false;

            return localCache[personName].Contains(imageName);
        }

        public static List<string> GetImageNames(string personName)
        {
            if (localCache.ContainsKey(personName))
                return localCache[personName];

            return null;
        }

        public static void Delete(string personName, string imageName)
        {
            if (localCache.ContainsKey(personName))
                localCache[personName].Remove(imageName);
        }

        public static void Delete(string personName)
        {
            if (localCache.ContainsKey(personName))
                localCache.Remove(personName);
        }

        public static void Clear()
        {
            localCache.Clear();
        }
    }
}
